diff --git a/css/screen.css b/css/screen.css
index e5a63d0..97c1bc7 100644
--- a/css/screen.css
+++ b/css/screen.css
@@ -73,6 +73,11 @@ button:active, a:active, .button:active {
 	padding: 10px 20px;
 }
 
+#login .backends label {
+	display: block;
+	margin-bottom: 1px;
+}
+
 label {
 	display: none;
 }
@@ -356,4 +361,4 @@ canvas {
 #settings .button.small {
 	width: 20%;
 	text-align: center;
-}
\ No newline at end of file
+}
diff --git a/index.html b/index.html
index 7d5ec18..3b158b8 100644
--- a/index.html
+++ b/index.html
@@ -62,6 +62,10 @@
       <p class="smallogo">
         <img src="img/icon-128.png" alt="Logo, an ape head">
       </p>
+      <p class="backends">
+        <label class="button"><input type="radio" name="backend" value="TinyTinyRSS" checked="checked" /> Tiny Tiny RSS</label>
+        <label class="button"><input type="radio" name="backend" value="OwnCloud" /> OwnCloud News</label>
+      </p>
       <p>
         <label for="url">URL:</label>
         <input class="button" type="text" name="url" id="url" value="" placeholder="http://example.com/tt-rss/" />
diff --git a/js/App.js b/js/App.js
index 750017c..ea06441 100644
--- a/js/App.js
+++ b/js/App.js
@@ -92,10 +92,10 @@ App.prototype.after_login = function(backend) {
 
 	this.changeToPage("#list");
 
-	if(backend == "TinyTinyRSS") {
-		this.backend = new TinyTinyRSS(this, localStorage.server_url, localStorage.session_id);
-	} else if(backend == "OwnCloud") {
+	if(backend == "OwnCloud") {
 		this.backend = new OwnCloud(this, localStorage.server_url, localStorage.session_id);
+	} else {
+		this.backend = new TinyTinyRSS(this, localStorage.server_url, localStorage.session_id);
 	}
 	this.reload();
 };
@@ -135,7 +135,7 @@ App.prototype.setColor = function(color) {
 App.prototype.reload = function() {
 	this.unread_articles = [];
 	$("#all-read").innerHTML = "❌";
-	this.backend.getUnreadFeeds(this.gotUnreadFeeds.bind(this));
+	this.backend.reload(this.gotUnreadFeeds.bind(this));
 };
 
 App.prototype.gotUnreadFeeds = function(new_articles) {
@@ -214,7 +214,9 @@ App.prototype.updateList = function() {
 	this.updatePieChart();
 };
 
-App.prototype.updatePieChart = function(all, unread) {
+App.prototype.updatePieChart = function() {
+
+	if(!this.unread_articles) return; // happens on loginpage
 
 	var all = this.unread_articles.length;
 	var unread = 0;
@@ -316,7 +318,7 @@ App.prototype.setCurrentRead = function() {
 	if(!article.set_unread) {
 		article.unread = false;
 		this.updateList();
-		this.backend.setArticleRead(article.id);
+		this.backend.setArticleRead(article);
 	}
 
 	article.set_unread = false;
@@ -339,39 +341,39 @@ App.prototype.toggleCurrentUnread = function() {
 	}
 
 	this.updateList();
-	this.backend.setArticleUnread(article.id);
+	this.backend.setArticleUnread(article);
 };
 
 App.prototype.toggleAllRead = function() {
 
 	if($("#all-read").innerHTML == "❌") { // set all read
 
-		var ids = [];
+		var articles = [];
 		for (var i = 0; i < this.unread_articles.length; i++) {
 			var article = this.unread_articles[i];
 			article.unread = false;
 			article.set_unread = false;
-			ids.push(article.id);
+			articles.push(article);
 		}
 		$("#all-read").innerHTML = "&#10003;";
 
 		this.updateList();
 
-		this.backend.setArticleRead(ids.join(","));
+		this.backend.setArticlesRead(articles);
 
 	} else {
 
-		var ids = [];
+		var articles = [];
 		for (var i = 0; i < this.unread_articles.length; i++) {
 			var article = this.unread_articles[i];
 			article.unread = true;
 			article.set_unread = false;
-			ids.push(article.id);
+			articles.push(article);
 		}
 		$("#all-read").innerHTML = "&#10060;";
 		this.updateList();
 
-		this.backend.setArticleUnread(ids.join(","));
+		this.backend.setArticlesUnread(articles);
 
 	}
 };
@@ -383,13 +385,13 @@ App.prototype.toggleStarred = function() {
 	if(!article.marked) {
 		article.marked = true;
 		this.updateList();
-		this.backend.setArticleStarred(article.id);
+		this.backend.setArticleStarred(article);
 		$("#setstarred").innerHTML = "&#9733;";
 	}
 	else {
 		article.marked = false;
 		this.updateList();
-		this.backend.setArticleUnStarred(article.id);
+		this.backend.setArticleUnstarred(article);
 		$("#setstarred").innerHTML = "&#9734;";
 	}
 
diff --git a/js/Login.js b/js/Login.js
index bf0cc27..ed96adc 100644
--- a/js/Login.js
+++ b/js/Login.js
@@ -25,6 +25,9 @@ Login.prototype.authenticate = function(e) {
 	e.preventDefault();
  	e.stopPropagation();
 
+ 	var backend = "TinyTinyRSS";
+ 	if($("#login form").backend[1].checked) backend = "OwnCloud";
+
 	var server_url = $("#url").value;
 	var user = $("#un").value;
 	var password = $("#pw").value;
@@ -44,7 +47,8 @@ Login.prototype.authenticate = function(e) {
 	} 
 
 	var _this = this;
-	if(true) {
+
+	if(backend == "OwnCloud") {
 		OwnCloud.login(server_url, user, password, function(data) {
 			if(data.version) {
 				var auth = btoa(user + ':' + password);
diff --git a/js/OwnCloud.js b/js/OwnCloud.js
index db6eb6f..34694a8 100644
--- a/js/OwnCloud.js
+++ b/js/OwnCloud.js
@@ -3,9 +3,8 @@ function OwnCloud(app, server_url, user_pass_btoa) {
 	this.server_url = server_url;
 	this.session_id = user_pass_btoa;
 	this.feeds = {};
-	if(localStorage.feeds) {
-		this.feeds = JSON.parse(localStorage.feeds);
-	}
+	var feeds = localStorage.feeds;
+	if(feeds) this.feeds = JSON.parse(feeds);
 	
 	window.addEventListener("offline", this.onoffline.bind(this));
 	window.addEventListener("online", this.ononline.bind(this));
@@ -16,22 +15,14 @@ OwnCloud.prototype.onoffline = function() {
 };
 
 OwnCloud.prototype.ononline = function() {
-	var read_articles = localStorage.read_articles;
-	if (read_articles ) {
-		read_articles = JSON.parse(localStorage.read_articles);
-		this.setArticleRead(read_articles.join(","), function() {
-			localStorage.read_articles = null;
-		});
-	}
-
-	var unread_articles = localStorage.unread_articles;
-	if (unread_articles) {
-		unread_articles = JSON.parse(unread_articles);
-		this.setArticleUnread(unread_articles.join(","), function() {
-			localStorage.unread_articles();
-		});		
-	}
 
+	["read", "unread", "starred", "unstarred"].forEach(function(type) {
+		var articles = localStorage[type + "_articles"];
+		if(articles) {
+			var callback = function(ok) { if(ok) localStorage[type + "_articles"] = null }
+			this.call("setArticles" + type.capitalize(), [JSON.parse(articles), callback]);
+		}
+	});
 };
 
 OwnCloud.prototype.doOperation = function(method, operation, new_options, callback) {
@@ -69,13 +60,16 @@ OwnCloud.prototype.doOperation = function(method, operation, new_options, callba
 	}
 	xhr.open(method, url, true);
 	xhr.withCredentials = true;
-	//var auth = btoa(user + ':' + password);
 	xhr.setRequestHeader('Authorization', 'Basic ' + this.session_id);
 	var body = JSON.stringify(options);
-	console.log(body)
 	xhr.send(body);
 }
 
+OwnCloud.prototype.reload = function(callback) {
+	var _this = this;
+	this.getFeeds(function() { _this.getUnreadFeeds(callback); });
+};
+
 OwnCloud.prototype.getUnreadFeeds = function(callback, skip) {
 	if(skip) {
 		skip = skip[skip.length - 1].id;
@@ -90,8 +84,6 @@ OwnCloud.prototype.getUnreadFeeds = function(callback, skip) {
 	};
 
 	var _this = this;
-	console.log(_this.toString())
-
 	this.doOperation("GET", "items", options, function(data) {
 		var items = data.items;
 
@@ -130,67 +122,73 @@ OwnCloud.prototype.getFeeds = function(callback) {
 	});
 };
 
-OwnCloud.prototype.setArticleRead = function(article_id, callback) {
-	var items = [article_id];
-	if(typeof article_id == "string") items = article_id.split(",");
+OwnCloud.prototype.setArticlesRead = function(articles, callback) {
 
 	var options = {
-		items: items,
+		items: articles.map(function(o) { return o.id; }),
 	};
 
 	if (navigator.onLine) {
 		this.doOperation("PUT", "items/read/multiple", options, callback);
 	} else {
-		var read_articles = localStorage.read_articles;
-		if(typeof read_articles !== "undefined") read_articles = JSON.parse(read_articles);
-		else read_articles = [];
-		read_articles.concat(options.items);
-		localStorage.read_articles = JSON.stringify(read_articles);
+		this.append("read_articles", articles);
 	}
-};
+}
 
-OwnCloud.prototype.setArticleUnread = function(article_id, callback) {
-	var items = [article_id];
-	if(typeof article_id == "string") items = article_id.split(",");
+OwnCloud.prototype.setArticleRead = function(article, callback) {
+	this.setArticlesRead([article], callback);
+}
 
+OwnCloud.prototype.setArticlesUnread = function(articles, callback) {
+	
 	var options = {
-		items: items,
+		items: articles.map(function(o) { return o.id; }),
 	};
 
 	if (navigator.onLine) this.doOperation("PUT", "items/unread/multiple", options, callback);
 	else {
-		var unread_articles = localStorage.unread_articles;
-		if (typeof unread_articles !== "undefined") unread_articles = JSON.parse(unread_articles);
-		else unread_articles = [];
-		unread_articles.concat(options.items);
-		localStorage.unread_articles = JSON.stringify(unread_articles);
+		this.append("unread_articles", articles);
 	}
 };
 
-OwnCloud.prototype.setArticleStarred = function(article_id) {
+OwnCloud.prototype.setArticleUnread = function(article, callback) {
+	this.setArticlesUnread([article], callback);
+}
+
+OwnCloud.prototype.setArticlesStarred = function(articles, callback) {
+	console.log(JSON.stringify(articles))
 	var options = {
-		article_ids: article_id,
-		mode: 1,
-		field: 0
+		items: articles.map(function(o) { return { feedId: o.feed_id, guidHash: o.guid_hash }; })
 	};
 
 	if (navigator.onLine) {
-		this.doOperation("updateArticle", options);
-	} 
+		this.doOperation("PUT", "items/star/multiple", options, callback);
+	} else {
+		this.append("starred_articles", articles);
+	}
 };
 
-OwnCloud.prototype.setArticleUnStarred = function(article_id) {
+OwnCloud.prototype.setArticleStarred = function(article, callback) {
+	this.setArticlesStarred([article], callback);
+}
+
+OwnCloud.prototype.setArticlesUnstarred = function(articles, callback) {
+
 	var options = {
-		article_ids: article_id,
-		mode: 0,
-		field: 0
+		items: articles.map(function(o) { return { feedId: o.feed_id, guidHash: o.guid_hash }; })
 	};
 
 	if (navigator.onLine) {
-		this.doOperation("updateArticle", options);
-	} 
+		this.doOperation("PUT", "items/unstar/multiple", options, callback);
+	} else {
+		this.append("unstarred_articles", articles);
+	}
 };
 
+OwnCloud.prototype.setArticleUnstarred = function(articles, callback) {
+	this.setArticlesUnstarred([articles], callback);
+}
+
 OwnCloud.prototype.normalize_article = function(article) {
 	var feed = this.feeds[article.feedId];
 	var feed_title = "";
@@ -200,6 +198,7 @@ OwnCloud.prototype.normalize_article = function(article) {
 
 	return {
 		id: article.id,
+		guid_hash: article.guidHash,
 		title: article.title,
 		content: article.body,
 		feed_title: feed_title,
@@ -220,6 +219,17 @@ OwnCloud.prototype.getFeedFor = function(o) {
 	return this.feeds[o.feedId];
 };
 
+OwnCloud.prototype.append = function(key, array) {
+
+	var tmp = localStorage[key];
+
+	if (typeof tmp !== "undefined") tmp = JSON.parse(tmp);
+	else tmp = [];
+
+	tmp.concat(options.items);
+	localStorage[key] = JSON.stringify(tmp);
+};
+
 OwnCloud.login = function(server_url, user, password, callback) {
 	
 	var url = server_url + "/index.php/apps/news/api/v1-2/version";
diff --git a/js/TinyTinyRSS.js b/js/TinyTinyRSS.js
index 1a2a208..4479f49 100644
--- a/js/TinyTinyRSS.js
+++ b/js/TinyTinyRSS.js
@@ -12,22 +12,14 @@ TinyTinyRSS.prototype.onoffline = function() {
 };
 
 TinyTinyRSS.prototype.ononline = function() {
-	var read_articles = localStorage.read_articles;
-	if (read_articles ) {
-		read_articles = JSON.parse(localStorage.read_articles);
-		this.setArticleRead(read_articles.join(","), function() {
-			localStorage.read_articles = null;
-		});
-	}
-
-	var unread_articles = localStorage.unread_articles;
-	if (unread_articles) {
-		unread_articles = JSON.parse(unread_articles);
-		this.setArticleUnread(unread_articles.join(","), function() {
-			localStorage.unread_articles();
-		});		
-	}
 
+	["read", "unread", "starred", "unstarred"].forEach(function(type) {
+		var articles = localStorage[type + "_articles"];
+		if(articles) {
+			var callback = function(ok) { if(ok) localStorage[type + "_articles"] = null }
+			this.call("setArticles" + type.capitalize(), [JSON.parse(articles), callback]);
+		}
+	});
 };
 
 TinyTinyRSS.prototype.doOperation = function(operation, new_options, callback) {
@@ -62,6 +54,10 @@ TinyTinyRSS.prototype.doOperation = function(operation, new_options, callback) {
 	xhr.send(JSON.stringify(options));
 }
 
+TinyTinyRSS.prototype.reload = function(callback) {
+	this.getUnreadFeeds(callback, []);
+};
+
 TinyTinyRSS.prototype.getUnreadFeeds = function(callback, skip) {
 	skip = skip.length;
 	var options = {
@@ -75,63 +71,92 @@ TinyTinyRSS.prototype.getUnreadFeeds = function(callback, skip) {
 	this.doOperation("getHeadlines", options, callback);
 }
 
-TinyTinyRSS.prototype.setArticleRead = function(article_id) {
+TinyTinyRSS.prototype.setArticlesRead = function(articles, callback) {
+
 	var options = {
-		article_ids: article_id,
+		article_ids: articles.map(function(o) { return o.id }).join(","),
 		mode: 0,
 		field: 2
 	};
 
+	if (navigator.onLine) {
+		this.doOperation("updateArticle", options, callback);
+	} else {
+		this.append("read_articles", articles);
+	}
+};
+
+TinyTinyRSS.prototype.setArticleRead = function(article, callback) {
+	this.setArticlesRead([article], callback);
+};
+
+
+TinyTinyRSS.prototype.setArticlesUnread = function(articles, callback) {
+
+	var options = {
+		article_ids: articles.map(function(o) { return o.id }).join(","),
+		mode: 1,
+		field: 2
+	};
+
+	if (navigator.onLine) {
+		this.doOperation("updateArticle", options, callback);
+	} else {
+		this.append("unread_articles", articles);
+	}
+};
+
+TinyTinyRSS.prototype.setArticleUnread = function(article, callback) {
+	this.setArticlesUnread([article], callback);
+};
+
+TinyTinyRSS.prototype.setArticlesStarred = function(articles, callback) {
+
+	var options = {
+		article_ids: articles.map(function(o) { return o.id }).join(","),
+		mode: 1,
+		field: 0
+	};
+
 	if (navigator.onLine) {
 		this.doOperation("updateArticle", options);
 	} else {
-		var read_articles = localStorage.read_articles;
-		if(typeof read_articles !== "undefined") read_articles = JSON.parse(read_articles);
-		else read_articles = [];
-		read_articles.push(article_id);
-		localStorage.read_articles = JSON.stringify(read_articles);
+		this.append("starred_articles", articles);
 	}
 };
 
-TinyTinyRSS.prototype.setArticleStarred = function(article_id) {
-	var options = {
-		article_ids: article_id,
-		mode: 1,
-		field: 0
-	};
-
-	if (navigator.onLine) {
-		this.doOperation("updateArticle", options);
-	} 
+TinyTinyRSS.prototype.setArticleStarred = function(article, callback) {
+	this.setArticlesStarred([article], callback);
 };
 
-TinyTinyRSS.prototype.setArticleUnStarred = function(article_id) {
+TinyTinyRSS.prototype.setArticlesUnstarred = function(articles, callback) {
+
 	var options = {
-		article_ids: article_id,
+		article_ids: articles.map(function(o) { return o.id}).join(","),
 		mode: 0,
 		field: 0
 	};
 
 	if (navigator.onLine) {
-		this.doOperation("updateArticle", options);
-	} 
+		this.doOperation("updateArticle", options, callback);
+	} else {
+		this.append("unstarred_articles", articles);
+	}
 };
 
-TinyTinyRSS.prototype.setArticleUnread = function(article_id) {
-	var options = {
-		article_ids: article_id,
-		mode: 1,
-		field: 2
-	};
+TinyTinyRSS.prototype.setArticleUnstarred = function(article, callback) {
+	this.setArticlesUnstarred([article], callback);
+};
 
-	if (navigator.onLine) this.doOperation("updateArticle", options);
-	else {
-		var unread_articles = localStorage.unread_articles;
-		if (typeof unread_articles !== "undefined") unread_articles = JSON.parse(unread_articles);
-		else unread_articles = [];
-		unread_articles.push(article_id);
-		localStorage.unread_articles = JSON.stringify(unread_articles);
-	}
+TinyTinyRSS.prototype.append = function(key, array) {
+
+	var tmp = localStorage[key];
+
+	if (typeof tmp !== "undefined") tmp = JSON.parse(tmp);
+	else tmp = [];
+
+	tmp.concat(options.items);
+	localStorage[key] = JSON.stringify(tmp);
 };
 
 TinyTinyRSS.prototype.logOut = function() {
diff --git a/js/application.js b/js/application.js
index 5e63e8b..6ab7903 100644
--- a/js/application.js
+++ b/js/application.js
@@ -50,5 +50,9 @@ String.prototype.stripHTML = function() {
 	return this.replace(/(<([^>]+)>)/ig, "");
 }
 
+String.prototype.capitalize = function() {
+    return this.charAt(0).toUpperCase() + this.slice(1);
+}
+
 if(!window.app) window.app = new App();